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September 18th, 2013, 01:06
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#1 |
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When to use a Bore Up Kit
I have an RPK with an upgraded inner barrel of 590mm (6.03mm)
The stock was much shorter so I'm wondering if i need a bore up compression set to support this barrel? I have read that anything below 600mm 'shouldn't' need a bore up kit. The stock cylinder is also a full cylinder with no ports. I have added a sorbo pad (and Neo pad) to the cylinder head so getting less air volume as it is with that addition. thoughts? |
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September 18th, 2013, 01:28
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#2 |
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You don't need a bore up kit for PSG1 length barrel. Regular non ported cylinder will also work fine. That's exactly what I have in my RPK for past few years. Don't know anything about sorbo pads, so no comment on that.
__________________
Op Woodsman. Biggest WW2 event in Ontario. |
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September 18th, 2013, 10:04
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#3 |
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Mr. Silencer
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Depends on your FPS and rounds you're trying to shoot.
The higher the FPS and heavier the round, the more it requires additional volume. |
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September 19th, 2013, 00:11
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#4 |
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GBB Whisperer
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Bore up kit isn't required. You use them with barrels longer than 590mm, and are also pushing in excess of 420fps.
The minimum strength spring you can use with a bore up kit, is a Systema M120S, or equivalent. (Note: The Systema M120S is different from the standard M120. The power output should roughly be about 420fps with the M120S.) |
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